<?php
namespace server\components;

class Redis{

    public static $_instance;

    private static $_reconnectNum = 3;

    public static function instance(){

        /**
         * 配置数据.
         */

        try{

            if (empty(self::$_instance)) {
                echo date('Y-m-d H:i:s')."重新实例化redis.......".PHP_EOL;
                global $configFile;
                self::$_instance = new \Redis();
                self::$_instance->connect($configFile['redis']['host'],$configFile['redis']['port']);
                self::$_instance->auth($configFile['redis']['options']['parameters']['password']);
            } else {
                if(!self::$_instance->isConnected()){
                    throw new \Exception('redis连接断开' . " \n");
                }
            }

        }catch (\Exception $e){

            if(self::$_reconnectNum > 0){
                self::$_reconnectNum --;
                usleep(500000);
                if(!empty(self::$_instance)){
                    self::$_instance = '';
                }
                return self::instance();
            }else{
                echo "REDIS连接超时：" . $e->getMessage() . "\n";
            }
        }
        return self::$_instance;
    }


}